APA (7e ed.) Bronvermelding

(1980). ULTRA and the history of the United States Strategic Air Force in Europe vs. the German Air Force / by the U.S. Army Air Force.

Chicago (17e ed.) Bronvermelding

ULTRA and the History of the United States Strategic Air Force in Europe Vs. the German Air Force / by the U.S. Army Air Force. 1980.

MLA (9e ed.) Bronvermelding

ULTRA and the History of the United States Strategic Air Force in Europe Vs. the German Air Force / by the U.S. Army Air Force. 1980.

Let op: Deze citaties zijn niet altijd 100% accuraat.